diff --git a/ssd1306.h b/ssd1306.h
--- a/ssd1306.h
+++ b/ssd1306.h
@@ -1,6 +1,22 @@
 #ifndef   ssd1306_H
 #define   ssd1306_H
 
+#define   SSD_RESET       GPIOB,GPIO_Pin_2
+#define   SSD_A0          GPIOB,GPIO_Pin_10
+#define   SSD_CS          GPIOB,GPIO_Pin_1
+
+#define   SSD_Reset_Low()   GPIO_ResetBits(SSD_RESET)
+#define   SSD_Reset_High()  GPIO_SetBits(SSD_RESET)
+#define   SSD_A0_Low()      GPIO_ResetBits(SSD_A0)
+#define   SSD_A0_High()     GPIO_SetBits(SSD_A0)
+#define   SSD_CS_Low()      GPIO_ResetBits(SSD_CS)
+#define   SSD_CS_High()     GPIO_SetBits(SSD_CS)
+
+// Use stdperiph
+#define   SPI_SendByte(data)  SPI_I2S_SendData(SPI1,data) 
+#define   SPI_Wait()       while(!(SPI1->SR&SPI_I2S_FLAG_TXE));while(SPI1->SR&SPI_I2S_FLAG_BSY); 
+
+
 void ssd1306_Init(void);
 void ssd1306_DrawChar(char ascii, unsigned char row, unsigned char xPos);
 void ssd1306_DrawString(const char *dataPtr, unsigned char row, unsigned char xPos);